Examples of CAM plants

📚 Quick Study Guide

• 🌵 CAM Definition: Crassulacean Acid Metabolism (CAM) is a photosynthetic pathway that allows plants to thrive in arid conditions by minimizing water loss.
• ⏰ Timing: CAM plants open their stomata at night to take in $CO_2$ and close them during the day.
• 🌱 Acid Accumulation: $CO_2$ is stored as an acid (malic acid) at night and then used during the day for photosynthesis.
• 💧 Water Conservation: This temporal separation of carbon fixation helps reduce water loss through transpiration.
• 🌍 Common Habitats: Deserts, semi-arid regions, and environments with limited water availability.

🧪 Practice Quiz

1. Which of the following is a key characteristic of CAM plants?
   1. A. Stomata open during the day and close at night.
   2. B. Stomata open at night and close during the day.
   3. C. Stomata remain open all the time.
   4. D. Stomata remain closed all the time.
2. What acid is primarily accumulated by CAM plants during the night?
   1. A. Citric acid
   2. B. Acetic acid
   3. C. Malic acid
   4. D. Lactic acid
3. In which type of environment are CAM plants commonly found?
   1. A. Tropical rainforests
   2. B. Arctic tundra
   3. C. Deserts
   4. D. Freshwater lakes
4. Which of the following plants is a well-known example of a CAM plant?
   1. A. Rose bush
   2. B. Sunflower
   3. C. Cactus
   4. D. Rice plant
5. What is the main advantage of CAM photosynthesis for plants in arid climates?
   1. A. Increased nutrient absorption
   2. B. Reduced water loss
   3. C. Enhanced pollination
   4. D. Faster growth rate
6. The temporal separation of carbon fixation in CAM plants involves:
   1. A. Fixing carbon during the day and releasing it at night.
   2. B. Fixing carbon at night and using it for photosynthesis during the day.
   3. C. Simultaneously fixing and using carbon throughout the day and night.
   4. D. Storing carbon in the roots for later use.
7. Which process is minimized by the CAM pathway?
   1. A. Photosynthesis
   2. B. Transpiration
   3. C. Respiration
   4. D. Germination